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Moloch Gibbon

Hylobates moloch

Moloch Gibbon

The Moloch gibbon is also known as the silvery or Javan gibbon and originates from the island of Java, in Indonesia. With almost 98% of their habitat already gone, the Moloch gibbon faces serious threat of extinction in the very near future.

Moloch gibbons spend most of their time in trees, swinging from branch to branch. They can leap as far as 30 metres in one jump.

A gibbon family has a territory of between 30 and 50 acres of rainforest. Each morning, gibbons mark their area by singing loudly. This acts as a warning to other gibbons to stay away.

Animal class


Diet - Omnivore
Moloch gibbons eat fruit, leaves, flowers, tree bark, insects, bird eggs and small birds.

These gibbons can grow up to 90 centimetres long and weigh between six and seven kilograms.

Moloch gibbons are found in the rainforests of Java, Indonesia.

Conservation status
The IUCN believes the Moloch gibbon faces an extremely high risk of extinction in the wild. The species is listed under Appendix I of CITES.

The growing population of java is encroaching on the habitat of Moloch gibbons. The loss of their habitat is a major threat to this lesser ape.

Current population
It is estimated that there are only 4,500 of these gibbons left in the wild.

Zoo population
Outside Indonesia only seven zoos keep Moloch gibbons, housing 80 animals between them.

Key to acronyms

IUCN - International Union for Conservation of Nature

CITES - Convention on International Trade in Endangered Species

Related links

Our other apes